- document.getElementById("ry1").onclick = function() { regression(1) };
- document.getElementById("ry2").onclick = function() { regression(2) };
- document.getElementById("clear").onclick = function() { clearLines() };
+ var g, regression, clearLines; // defined below
+ document.getElementById("ry1").onclick = function() { regression(1); };
+ document.getElementById("ry2").onclick = function() { regression(2); };
+ document.getElementById("clear").onclick = function() { clearLines(); };